Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c66d348f4d0d696…

MALICIOUS

PDF

37.8 KB Created: 2020-08-24 22:23:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 40a3a12a93d5edc1e37cc1738e17ba15 SHA-1: 2c956db39d4891b7fc821156c0f818e877b267e3 SHA-256: 0c66d348f4d0d696a20f53ecd8f50a29dbc65be928613c385d1d90800f42a1b9
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, including one pointing to a known malicious redirector, suggesting a phishing or scam attempt. The document body text and heuristics indicate a lure related to 'E verify form i 9 compliance' which redirects to the malicious URL. The presence of a link farm and a malicious redirector strongly suggests an attempt to lead users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=e+verify+form+i+9+compliance In PDF document text
    • http://files.livefreeandfarm.com/uploads/1/3/1/1/131163969/d1cc00d.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7471/4790/files/gotudojigosakajox.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0449/9256/1310/files/80736096543.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/2172/8918/files/2018_answer_key_ias.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/6723/5742/files/1967_mustang_brochure.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/8575/7606/files/wozofibumejajaval.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7426/3963/files/19339037681.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6263/2360/files/lilozusis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5069/5830/files/bixevolepuzoj.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0965/4436/files/damipotubuwis.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3510/7233/files/porakusakufewubolezere.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9303/3111/files/bezotexuxegowebig.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Related samples 4

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000571f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x571F 5260 bytes
SHA-256: fdcd92b2aa689a0459cb2ef749f6cf4a0aa5cf144b9ccf71a62a7c14363e62be
font_01_sfnt_off000068fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68FA 9916 bytes
SHA-256: 97efc196f22f20399830be93b0e15a9391e1e3218f2472d6cc0879afb35f632a

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